Abnormal Psychology" presents behaviour management approach for abnormal children that influences mental health, moulds intellectual levels as well as patterns of academic, affective perceptual, social and interpersonal behaviour. The definition of "abnormal" behaviour can be slippery, and it has changed radically over the course of human history. Mental and emotional disorders, maladaptive behaviours, and behaviours which cause significant discomfort are all studied in abnormal psychology. Psychologists have also developed a comprehensive guide to conditions which have been studied. This guide, called the Diagnostic and Statistical Manual, provides precise definitions of abnormal conditions, along with criteria for diagnosis and information about treatment options. This unique presentation on behaviour management and mental health is a must for students and teachers of psychology, child psychologists, social workers an general readers. A number of b ooks have been written by authors in the west on abnormal psychology. These books, while presenting the principles of the subject, explain it mostly with the examples drawn from their own environment. Though psychology is based upon universal principles, its understanding requires assimilation of its principles with reference to the local environment. In this book an attempt has been made to present the principles of abnormal psychology.